Arock weighing 98 newtons is pushed off the edge of a bridge 50 meters above the ground. what was the potential energy of the rock before it began to fall?

The potential energy of the rock before it began to fall is 4900 J

Explanation:

Force is defined as the mass multiplied by the acceleration of the object.

where,

F = force exerted on the object

m = mass of the object

g = acceleration due to gravity

Potential energy is defined as the energy possessed due to the height of the object.

Mathematically,

Or,

where,

= potential energy of the rock = ?

F = force applied on the rock = 98 N

h = height of the bridge from where the rock is thrown = 50 m

Putting values in above equation, we get:

Hence, the potential energy of the rock before it began to fall is 4900 J

hi there!

out of the two, (b) precision would be more reasonable.   however, both a and b could be pretty reasonable.

-awesomerepublic   : )

it would stay the same